From £1,960
Experienced extension builder ready to quote for your work. GARY TAYLOR BUILDERS LTD is the best extension builder in NN15. No obligation free quot...
From £2,072
I Plowright Brickwork is an established extension buildering business in NN15. We come highly recommended and provide competitive quotes for your w...
From £2,256
Kettering Mobile Sandblasting are here to help customers who need an Extension Builder in NN15. We offer a competitive rate to complete all your ex...
From £2,168
Relax... you have found a reliable extension builder in NN15. Jogga Construction is a friendly and reliable company based in NN15 who consider no j...
From £1,928
Experienced house builder. Eco structures from Denmark as well as conventional build. Extensions. Bathrooms. Kitchens and support steels when requi...
From £2,200
Experienced extension builder ready to quote for your work. Home Ryte Construction is the best extension builder in NN15. No obligation free quotes...
From £2,240
Experienced extension builder ready to quote for your work. KMR CONSTRUCTION is the best extension builder in NN15. No obligation free quotes and m...
From £2,376
Surrounding Villages Builders Limited are here to help customers who need an Extension Builder in NN15. We offer a competitive rate to complete all...
From £2,184
Hi im Shane & I am the managing director of sjs multitrade Ltd, I am a landscaper & builder of bespoke gardens and outdoor spaces created to my cus...
From £1,824
Garden and Building Solutions is an established and experienced local extension builder in NN15. Please contact us for a free, no obligation quote ...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in NN15 it ranges from £1,824 (Garden and Building Solutions based in NN10) to £2,376 (Surrounding Villages Builders Limited based in Nn14).
Comparing extension builders estimates for fitting an RSJ gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
Get rates and quotes to install an RSJ in NN15 by posting a job with HaMuch and we will send it to extension builders in NN15.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Kettering | £34 | £237 |
| Install An RSJ near Wellingborough | £39 | £251 |
| Install An RSJ near Rushden | £34 | £231 |
| Install An RSJ near Corby | £30 | £214 |
| Install An RSJ near Market Harborough | £31 | £217 |
| Install An RSJ near Northampton | £35 | £240 |
| Install An RSJ near Huntingdonshire | £36 | £290 |
| Install An RSJ near South Bedfordshire | £45 | £278 |
| Install An RSJ near Bedford | £45 | £278 |
| Install An RSJ near Kempston | £44 | £273 |
Whether you’re looking to extend your kitchen with a side return extension or you want to convert your basement into a liveable space, read our cost guides to get an idea of how much each project costs before getting a more accurate quote from our database of reliable tradespeople.

Underpin a building - £17,421

Two storey extension - £87,881

Build a timber frame extension - £25,921

Build a swimming pool - £80,921

Single storey extension - £53,416

Side return extension - £40,609

Install an RSJ - £2,121

Outbuilding - £9,921

Build a Mansard loft conversion - £51,921

Loft conversion - £33,008

Build a kitchen extension - £41,921

Hip to gable loft conversion - £41,921

Granny annexe - £86,921

Garden office - £9,921

Convert a Garage - £15,921

Garage - £18,421

Build a flat roof extension - £21,921

Build a dormer loft conversion - £41,921

Concrete foundations - £6,171

Convert a bungalow loft - £28,921

Convert a basement - £36,609